How to Tie String on Balloon in Mime

"Okay, let's review blowing up the balloon again. Let's take the whole balloon out of the pocket, stretching it, bringing it up, blowing it up slowly. 1, 2, 3. Now, watch my hand. It's round and I'm at the end of the balloon. I have to release that coming to flat, bringing my hand up here, and watch. I just give a little tug, twist, and tie. I go back to my pocket. I found a string in here. I reach out, tie it up, and we go back to that string action. Release. Now I look up. I love it. It's got a beautiful balloon. This is your chance to give it to someone. Someone may be small."